Porous Graphitic Carbon Nanosheets as a High-Rate Anode Material for Lithium-Ion Batteries

被引:152
作者
Chen, Long [1 ,2 ]
Wang, Zhiyuan [1 ,2 ]
He, Chunnian [1 ,2 ,3 ]
Zhao, Naiqin [1 ,2 ,3 ]
Shi, Chunsheng [1 ,2 ]
Liu, Enzuo [1 ,2 ]
Li, Jiajun [1 ,2 ]
机构
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Tianjin Key Lab Composites & Funct Mat, Tianjin 300072, Peoples R China
[3] Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
基金
中国国家自然科学基金;
关键词
two dimensional; carbon nanosheets; high-rate anode; lithium-ion battery; GRAPHENE NANOSHEETS; HIGH-POWER; STORAGE; OXIDE; NANOSPHERES; ELECTRODE; SHEETS; NANOCRYSTALS; SPHERES;
D O I
10.1021/am402368p
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Two-dimensional (2D) porous graphitic carbon nanosheets (PGC nanosheets) as a high-rate anode material for lithium storage were synthesized by an easy, low-cost, green, and scalable strategy that involves the preparation of the PGC nanosheets with Fe and Fe3O4 nanoparticles embedded (indicated with (Fe&Fe3O4)@PGC nanosheets) using glucose as the carbon precursor, iron nitrate as the metal precursor, and a surface of sodium chloride as the template followed by the subsequent elimination of the Fe and Fe3O4 nanoparticles from the (Fe&Fe3O4)@PGC nanosheets by acid dissolution. The unique 2D integrative features and porous graphitic characteristic of the carbon nanosheets with high porosity, high electronic conductivity, and outstanding mechanical flexibility and stability are very favorable for the fast and steady transfer of electrons and ions. As a consequence, a very high reversible capacity of up to 722 mAh/g at a current density of 100 mA/g after 100 cycles, a high rate capability (535, 380, 200, and 115 mAh/g at 1, 10, 20, and 30 C, respectively, 1 C = 372 mA/g), and a superior cycling performance at an ultrahigh rate (112 mAh/g at 30 C after 570 charge-discharge cycles) are achieved by using these nanosheets as a lithium-ion-battery anode material.
引用
收藏
页码:9537 / 9545
页数:9
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